Photos and commentary about the woman's injuries - allegedly sustained after a bottle was thrown into a window, shattering it and spraying glass into her face - were posted to Facebook accusing members of the Pirates of doing the damage.
Mr Poole said the allegations were "social media nonsense" and that players were considering legal action under the Harmful Digital Communications Act.
"It is completely unfounded. There is no substance and there is nothing to the allegations," he said.
"People [use] some underhanded tactics to try and put people off the game and it's pretty nasty."
Mt Albert Lions manager Bill Werry said there was a lot of rumour and gossip surrounding the incident, but welcomed the outcome of the police investigation.
"I have seen the photo and if [the accused] goes through the New Zealand police and the justice system I am sure justice will served. If not, I feel for [the accused] if he has been falsely accused."
Auckland Rugby League chief executive John Ackland said he would not comment on the matter if it was under police investigation.
NZ Rugby League spokesman Grant Chapman said there was no obligation for the club to report the incident to them.
"Our jurisdiction is mainly around on-field or sideline incidents, and we are guided by the legal system on incidents such as this."
